package com.leyou.user.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.leyou.common.exception.LyException;
import com.leyou.common.utils.RegexUtils;
import com.leyou.user.dto.UserDTO;
import com.leyou.user.entity.User;
import com.leyou.user.mapper.UserMapper;
import com.leyou.user.service.UserService;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.HashMap;
import java.util.concurrent.TimeUnit;

import static com.leyou.common.constants.MQConstants.ExchangeConstants.*;
import static com.leyou.common.constants.MQConstants.RoutingKeyConstants.VERIFY_CODE_KEY;

/**
 * @author 虎哥
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {

    private StringRedisTemplate redisTemplate;

    private AmqpTemplate amqpTemplate;

    private BCryptPasswordEncoder passwordEncoder;


    private static final String KEY_PREFIX = "user:verify:code:phone:";

    public UserServiceImpl(StringRedisTemplate redisTemplate, AmqpTemplate amqpTemplate, BCryptPasswordEncoder passwordEncoder) {
        this.redisTemplate = redisTemplate;
        this.amqpTemplate = amqpTemplate;
        this.passwordEncoder = passwordEncoder;
    }

    @Override
    public Boolean exists(String data, Integer type) {
        if (type !=1 && type !=2){
            throw new LyException(400,"请求参数有误");
        }
        //校验手机或用户是否存在
        return query().eq(type == 1 ,"usernama",data)
                .eq(type == 2 ,"phone",data)
                .count() == 1;
    }

    @Override
    public void sendCode(String phone) {
        //验证手机号码
        if (!RegexUtils.isPhone(phone)){
            throw new LyException(400,"手机号码不正确");
        }
        //生成验证码
        String code = RandomStringUtils.randomNumeric(6);
        //保存验证码到redis
        redisTemplate.opsForValue().set(KEY_PREFIX+phone,code,30, TimeUnit.MINUTES);
        //发送消息mq,通知sms服务
        HashMap<String, String> msg = new HashMap<>();
        msg.put("phone",phone);
        msg.put("code",code);
        amqpTemplate.convertAndSend(SMS_EXCHANGE_NAME, VERIFY_CODE_KEY,msg);

    }

    @Override
    @Transactional
    public void register(User user, String code) {
        //校验密码
        //取出redis中的验证码
        String caheCode = redisTemplate.opsForValue().get(KEY_PREFIX + user.getPhone());
        if (!StringUtils.equals(code,caheCode)){
            throw new LyException(400,"验证码错误");
        }
        //对密码加密
        user.setPassword(passwordEncoder.encode(user.getPassword()));
        //写入数据库
        save(user);
    }

    @Override
    public UserDTO queryUserByPhoneAndPassword(String username, String password) {
        User user = getOne(new QueryWrapper<User>().eq("username", username));
        //判断用户是否存在
        if (user == null){
            //用户名错误
            throw new LyException(400,"用户名或密码错误");
        }
        //校验密码
        if (!passwordEncoder.matches(password,user.getPassword())){
            throw new LyException(400,"用户名或密码错误");
        }
        return new UserDTO(user);
    }


}